quick and throwaway support for going geojson -> vector tile - will return an clean this up later on
add ICU upgrade details to changelog
do no try to render vtiles if lacking layers
add future tiff change to upcoming changelog
quick fix for missing libxml headers
implement #242
avoid leak in the case of errors with args when rendering a vtile
call node-pre-gyp directly
Merge remote-tracking branch 'upstream/master'
simplify makefile, depend on node-pre-gyp tricks
Merge branch 'master' of github.com:mapnik/node-mapnik
Merge remote-tracking branch 'upstream/master'
add appveyor
Merge remote-tracking branch 'upstream/master'
test appveyor.yml
appveyor.yml test 2
test yml. new mapnik SDK
removed error level check after 'nodist update' and 'nodist stable'
yml: clone folder
protobuf headers and lib included in mapnik SDK.